Interstate 474
I-474 highlighted in red
Route information
Auxiliary route of I-74
Maintained by IDOT
Length14.88 mi[2] (23.95 km)
ExistedLate 1970s[1]–present
Major junctions
West end I-74 / IL 6 in Peoria
  US 24 in Bartonville
US 24 in Creve Coeur
East end I-74 in East Peoria
CountiesPeoria, Tazewell
Highway system
IL 394I-490

Interstate 474 (I-474) is an Interstate Highway loop route that provides a southwestern bypass around the north central Illinois city of Peoria. I-474's parent interstate is I-74. As the first digit of the interstate's number is even, it follows the established convention of providing a loop around a city. Interstate 474 is 14.88 miles (23.95 km) long. I-474 is the highest numbered route in the state of Illinois.[2] It is also, excluding the proposed I-274 in North Carolina, the only auxiliary route of I-74.

Route description

Shade-Lohmann Bridge from the southeast
Shade-Lohmann Bridge from the southeast

Interstate 474 is a modern, Interstate-standard four-lane freeway for its entire length. Prior to 2006, thru truck traffic on I-74 was instructed to use I-474. This is because prior to its 2004-2007 reconstruction, Interstate 74 was significantly below Interstate standard, having numerous 15 mph (24 km/h) onramps and offramps, extremely short merging space for onramps (some less than 500 feet (152 m) in length),[3] and a 50 mph (80 km/h) speed limit through downtown Peoria.[citation needed]

The Illinois Route 116 access interchange at Maxwell Road has been indicated as the eastern terminus for the Quincy to Peoria expressway now known as the Illinois Route 336 project.[4]

The western terminus of I-474 is at I-74 exit 87A. The eastern terminus of I-474 is at I-74 exit 99. North of the western terminus, the road continues as Illinois Route 6 with a new series of exit numbers.


I-474 was constructed through the mid-1970s. The now-named Shade-Lohmann Bridge was erected in 1973. During that year, $30.1 million was allocated for acquisition of right-of-way, grading work and overpass/bridge construction across the whole length of the highway.[5]

Exit list

Peoria0.000.00 IL 6 north – ChillicotheContinuation north beyond I-74
0 I-74 – Peoria, Moline, Rock IslandWestern terminus; signed as exits 0A (east) and 0B (west); I-74 exit 87A
Bellevue3.786.083A To IL 116 – Farmington
5.348.595 CR R49 (Airport Road)Serves Peoria International Airport
BartonvillePeoria line7.0911.416 US 24 west (Adams Street) – BartonvilleWest end of US 24 overlap; signed as exits 6A (US 24 west) & 6B (Adams Street) westbound
Illinois River8.83–
Shade–Lohmann Bridge
TazewellCreve Coeur9.5715.409 US 24 east / IL 29 – East Peoria, PekinEast end of US 24 overlap
East Peoria14.8823.9515 I-74 to I-155 south – Peoria, Indianapolis, LincolnEastbound exit and westbound entrance; eastern terminus and signed as exit 15 (west); I-74 exit 99
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Kurumi. 3-digit Interstates from I-74. Last updated November 24, 2005. Retrieved March 27, 2006.
  2. ^ a b Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
  3. ^ "USGS Map of Peoria, Illinois" (Map). Retrieved September 22, 2020.
  4. ^ Illinois Department of Transportation. Image of eastern end of project maps from Peoria to Macomb IDOT site. Retrieved March 27, 2006.
  5. ^ R.L. Polk and Company (1973), Polk's Peoria City Directory, R.L. Polk and Co. Publishers

Route map: